Quality of psychiatric referral letters in a Nigerian tertiary hospital: a one-year clinical audit. Port Harcourt Medical Journal, [S. l.], v. 20, n. 2, p. 147–154, 2026. DOI: 10.60787/phmj.v20i2.286. Disponível em: https://www.phmj.org.ng/index.php/home/article/view/286. Acesso em: 12 aug. 2026.